Pretty Little Liars Clips: A Clue, A Confrontation

So, as you might expect, the action picks up on Pretty Little Liars Season 4 Episode 14 (titled "Who's in the Box?" and airing on January 7) with Spencer and company trying to figure out what the heck is going on.

In one of the following two sneak peeks, we see them digging up dirt on another girl who went missing around the same time as Alison, while in the other we witness Mona confronting Hanna and letting her have it.